TrueRTA is a software based audio analyzer for testing and evaluating audio systems using just a PC with basic sound capability.The instruments found in TrueRTA include:· Low distortion signal generator· Digital level meter· Crest factor meter· Dual trace oscilloscope· High-resolution real time audio spectrum analyzerBy providing these test instruments as software and employing the audio input and output capability of your PC we are able to offer a level of performance that could only be replaced by many thousands of dollars worth of traditional bench top test instruments. TrueRTA turns your PC into a powerful audio test system normally seen only in better audio research and design laboratories. The screen shot below shows TrueRTA evaluating the performance of the E-MU 0404 USB sound system with a 1kHz sine wave where the 1 kHz distortion components are seen to be below -100 dB (i.e., less than 0.001%).Create your own professional measurement system starting with TrueRTA software on your pc. Then add the measurement microphone, preamp and USB interface of your choice.The TrueRTA setup you choose is virtually unlimited for field measurement work because you can select your own professional grade microphone cable. This way, TrueRTA allows users to take measurements from any distance. Requirements: